Faster rendered viewport shading
Rendered shading is the same as a final render (mostly), so unless you have a very simple scene and a small render farm, you probably aren't going to get even near real-time (as in > 1-2fps) renders.

Some things you can do to help:


Render a small low resolution part of the viewport (e.g. with render border) See Render Border&#39;s related check boxes - How do they work?
Reduce the number of samples (Render settings > Sampling) and bounces (Render settings > Light paths)
If you still want to use the viewport (though I would recommend rendering a quick image sequence), turn down the framerate so each frame has some time to converge.